Unless I have it all wrong, Lebron took two steps after the dribble, on the 2nd step he got tripped up and couldn't go up. The two tiny steps looks like they were caused by being tripped up.

He took three steps before Bradley's foot tripped him up (if that even happened). And they called the foul on Stiemsma, not Bradley. Lebron also took several steps before putting the ball on the floor.